We looked at trying Paxful but on trustpilot.com they have a large portion (around 18%) of bad reviews so we were nervous.
I'm quite surprised to see you go with Vertex if you did this. Vertex is less famous and not many users use it, which obviously means that there are no reviews about them yet. What a brave decision (I hope?).
It is true that I have to be aware of that I have never seen this forum discussing Vertex exchanges and I have just looked at this thread, but I wonder why the OP wants to try this exchange, there are still many safer exchanges? Don't you think again?
Dude forget vertex go to Binance where you can trade like a professional. I don't advise people to use small cryptocurrency exchanges these days due to so many numbers of exit scams that were done by the small exchanges. You should avoid using small exchanges to avoid getting scammed by them.